Shoe-last



W. P. MCLAUGHLIN.

SHOE LAST.

APPLICATION FILED vec zo. |919.

1,389,455 1 Patented Aug. 30, 1921.

5 nue/Moz WILLIAM r. MCLAUGHLIN, Or BRISTOL, INDIA RUBBER COMPANY, A o

RHODE ISLAND, AssIGNOR 'ro NATIONAL O'RPORATION OF RHODE ISLAND.

SHOE-LAST. c

Speciicationof Letters Patent.

Patented Aug. 30, 1921.

Application led December 20, 1919. Serial No. 346,364.

To all aU/wm t may concern.'

Be it known that I, WILLIAM P. Mo- LAUGHLIN, a citizen of the United States, residing at Bristol, county of Bristol, State of Rhode Island, have invented new and useful Improvements in Shoe-Lasts, of which the following is a full, clear, and exact description.

This invention relates to improvements in shoe lasts.

In the manufacture of shoes, it is customary to build up the shoes upon lasts, and when transporting the lasts from place to place in the course of manufacture, to mount a plurality of such lasts upon a frame. The frames are generally provided with pins to be inserted into corresponding sockets formed in the lasts, preferably two pins for each last. The lasts are generally made either of wood or cast metal. Although the dimensions of the pins relative Vto the sockets are preferably constructed so as to properly anchor the lasts in place againstaccidental displacement, the sockets and pins after long use acquire a loose fit so that very frequently the lasts Will be accidentally shaken from the frames. With cast metal lasts,-n which,

On account of the cost of the metal, the walls are usually no thicker than is necessary to give the required strength, a very small bearing surface for the pins is thereby afforded and consequently the danger of accidental displacement is even greater with cast metal lasts than with wood lasts. The

present invention aims to remedy this defect and to this end contemplates frictionally anchoring a pin in place in a last socketl and more specifically contemplates securing in one of the sockets of a last a frictionally anchoring bushing. The invention is particularly adapted for cast metal lasts, to supply the required extent of bearing surface irrespective of the thickness of the casting wall.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of one specific embodiment thereof illustrated in the accompanying drawings, in which:

Figure 1 is a fragmental elevation partly in section of a last equipped with the present embodiment and mounted in place on a frame.

Fig. 2 is a bushing.

In the embodiment illustrated, there is shown a metal cast last 4 of comparatively thin. Wall structure having two bores 5 to receive thepins 6 on the frame 7 In one of the bores 5 there is secured the frictional pin engaging bushing 8, which comprises essentially a crown head 9 which is embedded into the outer surface of the last surrounding the bore 5 with its socket forming portion l0 extending into the bore 5 considerably beyond the depth of the wall structure. The socket portion l0 is split as shown with inwardly bent resilient finperspective of the anchoring gers ll which as shown in Fig. l are adapted to engage the pin 6 and thus securely anchor the last in place. The pins 6 it will be seen co-act in their engagement with the last to resist angular movement of the last while the sprin -pressed engagement betweenV the bushing with one of the pins serves to resist axial relative movement of the last.

It is obvious that various changes and modifications may be made in the details of construction without departing from the general spirit of the invention.

Having thus described my invention, what I claim and desire to protect by Letters Patent is:

l. The combination with a hollow last having a bore through its wall, and a socket member projecting through the bore into the interior of the last and having yielding pin engaging members, of a last support having a pin of uniform diameter throughout adapted to be yieldingly engaged by said members.

2. In combination, v.a hollow last having a bore through its wall, a socket projecting through said bore into the interior of the last to form an extended bearing for a last support, the inner end of the socket being split and the split portions inclined toward each other to frictionally engage the support when inserted in the socket.

3. A. hollow form, a support therefor, a carried by said housing or spring-pressed pin projecting from the support, a bushing engagement with said pin for ye'ldingly housed in the Wall of said form and extendresisting axial relative movement. 10

ing thereheyond into the hollow of said Signed at Bristol, Rhode Island, this 16th Jform to provide a bearing of materially day of December, 1919.

greater length than the thickness of said Wall for receiving the said pin, and means WILLIAM P. MoLAUGHLIN. 

